Results 101 to 110 of about 41,445 (309)

Computational methods for collisional stellar systems [PDF]

, 2023
Rainer Spurzem, Albrecht Kamlah
openalex   +1 more source

Spin‐Dependent Generation of Surface‐Bound Radicals Toward Selective and Long‐Lasting Water Purification

Advanced Functional Materials, EarlyView.
This study develops a novel atomic engineering strategy to fine‐tune the spin state of α‐Fe2O3 catalysts toward a medium‐spin state, thereby modulating peroxymonosulfate activation and selectively yielding surface‐bound radicals. Compared with free radicals, surface‐bound radicals exhibit moderated oxidation potential, extended lifespan, surface ...
Shuyu Wang, Zhonglin Chen, Jimin Shen, Pengwei Yan, Jing Kang, Binyuan Wang, Shengxin Zhao, Xiaoguang Duan   +7 more
wiley   +1 more source

Testing the Shock-cooling Emission Model from Star–Disk Collisions for Quasiperiodic Eruptions

The Astrophysical Journal
Quasiperiodic eruptions (QPEs), the repeated outbursts observed in soft X-ray bands, have attracted broad interest, but their physical origin is under debate.
Wenyuan Guo, Rong-Feng Shen
doaj   +1 more source

Bio‐Inspired Multimodal Hardware Front‐End Enabled by 2D Floating‐Gate Memory for UAV Perception

Advanced Functional Materials, EarlyView.
A MoS2/h‐BN /graphene floating‐gate memory underpins a bio‐inspired multimodal front end that integrates visual, inertial, and airflow cues. A 4 × 4 FG memory array encodes temporal intensity differences, while IMU‐ and airflow‐driven threshold modulation suppresses self‐motion artifacts, enabling fast, low‐power, robust autonomous UAV tracking and ...
Lianghao Guo, Yue Cheng, Cong Li, Xiaoyu Guo, Jiankai Yin, Dadong Fan, Zhenyu Xu, Chenyu Tang, Arokia Nathan, Shuo Gao, Li Tao, Luigi G. Occhipinti   +11 more
wiley   +1 more source

On the Orbital Effects of Stellar Collisions in Galactic Nuclei: Tidal Disruption Events and Ejected Stars

The Astrophysical Journal Letters
Dense stellar clusters surround the supermassive black holes (SMBH) in galactic nuclei. Interactions within the cluster can alter the stellar orbits, occasionally driving a star into the SMBH’s tidal radius, where it becomes ruptured, or expelling a star
Sanaea C. Rose, Brenna Mockler
doaj   +1 more source

Quasi-Periodic Flares from Star-Accretion Disc Collisions

, 2009
We present simulated results of quasi-periodic flares generated by the inelastic collisions of a star bound to a super-massive black hole (SMBH) and its attendant accretion disc.
Alexander, Armitage, Baganoff, Bardeen, Blandford, Bower, Bromley, Carter, Ciufolini, Cunningham, Cunningham, Dabrowski, Damour, Damour, Damour, Damour, Eisenhauer, Evans, Fanton, Frank, Fuerst, Genzel, Genzel, Ghez, Ghez, Ghez, Ghez, Gierlinski, Gillessen, Karas, Karas, Kippenhahn, Kojima, Komossa, Komossa, Komossa, Laor, Lehto, Lindquist, Lixin (Jane) Dai, Miller, Misner, Nayakshin, Nilsson, Norman, Ostriker, Pariev, Perry, Peters, Piran, Rauch, Rauch, Rees, Rees, Reynolds, Roger Blandford, Schödel, Schödel, Semerák, Shen, Spruit, Steven V. Fuerst, Syer, Thorne, Wagoner, Wagoner, Zentsova, Zurek   +67 more
core   +1 more source

Clean Up Behind You ‐ Novel Patterning Approach for Solid Immersion Lenses

Advanced Functional Materials, EarlyView.
A focused ion beam (FIB) milling strategy enables rapid fabrication of solid immersion lenses (SILs) with smooth, debris‐free surfaces eliminating the need for post‐processing. The optimized pattern improves efficiency and surface quality. SILs containing NV centers are also investigated, confirming the technique's suitability for quantum and photonic ...
Aleksei Tsarapkin, Stefan Facsko, Wentao Zhang, Anna Mogilatenko, Kilian Unterguggenberger, Bailiang Li, Cem Güney Torun, Gerhard Hobler, Tommaso Pregnolato, Tim Schröder, Katja Höflich   +10 more
wiley   +1 more source

Introducing a new multi-particle collision method for the evolution of dense stellar systems II. Core collapse [PDF]

, 2021
Pierfrancesco Di Cintio, Mario Pasquato, Alicia Simon-Petit, Suk-Jin Yoon   +3 more
openalex   +1 more source

A Mechanistic Blueprint for Fast, High‐Yield Green Scintillators Using Conjugated Polymer–Nanocrystal Composites

Advanced Functional Materials, EarlyView.
Conjugated polymer–nanocrystal composites are investigated to develop fast, high‐yield green scintillators. The polymer F8BT enables efficient, ultrafast emission, while blends with non‐emitting HfO2 nanocrystals and luminescent CdZnS/ZnS quantum dots reveal distinct sensitization mechanisms.
Chenger Wang, Emanuele Mazzola, Andrea Fratelli, Matteo L. Zaffalon, Francesco Bruni, Francesco Carulli, Xiaohe Zhou, Saptarshi Chakraborty, Leonardo Poletti, Luca Cappelletti, Francesco Meinardi, Francesca Rossi, Luca Gironi, Sergio Brovelli   +13 more
wiley   +1 more source

Origin of the unusually low nitrogen abundances in young populations of the Large Magellanic Cloud

, 2010
It is a longstanding problem that HII regions and very young stellar populations in the Large Magellanic Cloud (LMC) have the nitrogen abundances ([N/H]) by a factor of ~7 lower than the solar value. We here discuss a new scenario in which the observed
Bekki, Cameron, Carrera, Cole, Collins, Da Costa, Harris, Henry, Hill, Kallivayalil, Kenji Bekki, Makino, Pagel, Peek, Putman, Takuji Tsujimoto, Thom, Tsujimoto, Tsujimoto, Uemura, van Loon, Venn, Wakker, Wakker, Wakker   +24 more
core   +1 more source